Electrical coil-winding machine



Dec. 10, MlLLER ELECTRICAL COIL WINDING MACHINE v Filed March 5, 1943 4 Sheets-Sheet l Dc,1@,me, 2,412,280

ELECTRICAL COIL WINDING MACHINE Filed March 3, 1945 4 Sheets-Sheet 2 Dw-w, 1m J.W.MH.LER 'w zw ELECTRICAL COIL WINDING MACHINE Filed March 3, '1945 4 Sheets-Sheet 3 m T19, J MILLER v ELECTRICAL COIL WINDING MACHINE Filed March 5,1943 4Sheets-Shet 4 Patented Dec. 10, 1946 i; {STAT ELECTRICAL ohn William COIL-WINDING MACHINE Miller, London.N.. W. 9, England, assignor .td (loodmans Industries Limited, Wembley,Middlesex, England;.a 'British .corn- 'tlApplication March 3, 1943,;SerialNo. 477,883 7 i I i-Great Britain July .l6, 1942 f i reclaims.

This invention reiat to machines for winding muses are used in electricallinstruments,'more cularly those known .asI'moving coils. 'ctrical coils ar'jusually 'wound'by hand and it, takes' about three minutes to do this. a

' It is' the objectof the present invention to provide a machine whereby single or multiple layer ele'ctricalcoils can bewoundautomatically.

A further object of the invention is to provide means for, ensuring" that the separate turns of thecoil are applied in abutting relationship.

Another object of the invention isito provide means for supplying wire to a former t an angle of lag which remains substantially constant until the wire has been wound the full length of the former. Still another object of the invention is to provide means, whereby in .the'case of multi-layer coilsthe wire is supplied to a former at an angle of lag, which is substantially constant in the separate layers but in'opposite direction for each successive layer. i I I A still .iurther object of the invention is to provide means for varying the direction of the angle of lag of the wire automatically as the end of each separat'ejlayeris reached.

Xe'tanotherobject of .the'invention is to provide' means whereby a wire guide receives an accelerated movement in the same direction at the end of a layer of turns so as to start its return movement with the same angle of lag but in the opposite direction.

A further objectgof the invention is to provide a machine which avoids the necessity of stopping the machine atithe end of winding each separate layer for the purpose of coating the wound layer, before applying the next layer, with a suitable adhesive or insulating medium, by coating the wire with a suitable adhesiveor insulating medium in liquid form before it is fed to a former. These and other objects will appear from the following description, with reference to the accompanying drawings which show a preferred embodiment of the. invention as applied to a coil winding machine.

.Inthese drawings: Fig. 1 shows an elevation. "Fig. 2 is a plan view, partly in section.

Fig. 3 is a section on the line IIIIII of Fig. 2. Fig. 4 is an elevation'partly in section looking at the left-handside of Fig. 2, and Fig. 5 shows adetail. k f I shown in the drawings, the machine is providedwith a supporting structure I of substantially inverted U-shape'. .In the structure is rotatably mounted a shaft 2, 3 on which are located two collars 4', 5 oi'whi'ch one 5 is secured to the shaft, whilst the other 4 is loosely mounted on the shaft. llh'e collars 4, 5 are connected together by a' coiled jspringfi. The purpose of this arrangement willbe describedhereinafter.

One the" end of the shaftpoi'tion 2 iskeyed a clutch fniembe'r ,1 provided with a, conical surface.

Oiithisendofjthe shaft portion 2 is slidably mounted a'bush 9on which is'keyed a driving pulley It provided in the portion thereof adjacentthe jclutchmemberl'lfwith a groove ll into which is fitted aring [2 of leather or other friction material. Inforderto holdthe ring 12 in frictional engagem ent with they cam 8 for the purpose of driving the shaftZ, 3,.the bush9 is pressedtowards the clutch member fljby a spring l3 secured to' a shaft M; rotatably mountedv in the structure I; andcarryingfat its other end an operating lever In orderfto ensurejengagement between the spring l3 and the bush '9 the latter is preferably provided with a conical end I6.

On the, sha ftportion 3 is keyed a pinion I! which gears 'withaspur wheel 18 keyed to a shaft [9 rdtatably' mounted in the structure I. The gear ratiobetween the pinion I l and spur wheel I8 is preferably-1:22" v To theshaft l9 is keyed a worm 20' gearing with'a worm wheel 2| secured to sleeve 22 rotat ably mounted in a, boss 23, depending from the top of the structure I.

In the sleeve 22 is rotatably' mounted a spindle 24 tothe lowerend of which-is keyed a heart shaped cam 25', of a resilient nature, whichcarries a tooth 2 6. which co-operates with radial recesses provided over I the. entire adjacent face of the wbrmWheelZ I. Thefree lower end of the spindle 24 ishardenedand co-operates with a, cam 21' in which-is mounted a spring actuated ball which is pposite the end of the spindle 24 inthe operative position of the niachine.

To the upper end of the spindle 24 is keyed a camwcage 2 8 for the reception of one or more earns 29; The cams 29 are secured in position by a plate 30 secured to a boss of the cam cage 28 by screws3l';

The cams 29 are 32; 33. i

With ,thegrooves 132, 33 co operates a pin 35 secured to a slide 36,, slidably: ounted on a lever 31 by pin and slot connections 38.

The slide 36 is provided with a second pin 39 adapted to co-operate with a stop lever 40 keyed provided with cam grooves to' a spindle 4| rotatably mounted in the structure I." The end of the slide, at which the pin 35,

is secured thereto, is connected by a link 15 to the lever 3'1.v

vided with an arm 44 having a pointed end 45 co-operating with the pointed end 46 of a spring actuated plunger 4! in a housing 48 secured to" :The turning of theshaft-M also disengagesthe pawl lev'er 68 from the projection '69, whilst.

the structure I To the lower end of the spindlelllzis keyed a tion lining II' is pressed against the conical surface! of the clutch member Wh he shaft 2", 3' is driven by" the pun'eymi' windy here-be mentioned that a driving belt for, engagement with the pulley Illis preferably offset so as to l V assistin keeping the friction lining ll incontact lever 49 connected by a spring 5'l't'o a lever52secured to a container 53 contair'iinga hesive or insulating material. 7 Between the levers 49, 52 is located a plate 53" tamer 53 closed by a. cover? 59 provided with a;

(not shown) is fed mte the'container' 53'.

m the container. 53 is rotatably iheuhteu a greeted etude roller 6 I, immersed'ifi the liquid he heie so through which wire, Home su my spjool' the container 53; which serves to" guide the wire.

the liquid.

Near its upper end thec'oiitainer s'a' tsp-retired a c'ohic'al spout '62 having a longitudinal groove 63 in its upper surface along which the wire is passed. After the wire has been placed into the ereeye it is retained in the latterbya conical cap 64. The cap 64 preferably; pr'o vided with a longitudinal" slit adapted to be Brought iii-t6 register with'the g reevev'vhefi the wireis'to b'e placed'i'rito the greet/eta so that thewire can be placed ir'itd the re'eess 63 withoiit removing the cap 64; whereupon the cap is turned tobr'irig" thvslitand er'geeve out of regis'ter whereby the wire; is rtainediii the groove 63.

V The wire hem the speuttz eemed us a sin tiid 'arried hy a ehue z as hieuhtea' on the shaft serum 3; The chuc s5 reeeives' rerreer'jssb eh which the wire is time we'uhei. v i

I To the lower end of the spindle 4|" is keyed a etee 66 coniicted by a spring Site at pawllever 68 keyed tdthe shaft [4. The iever' es' eoeee'rates with a projection 69 erat e collarf4; On the shaft I4 is also keyeda lever 10 of which theiree er'id engages witha notch in the lever (if;- when thevarious parts are in the position shown in the drawings 5 o v v r v To the spindle is secured a sleeve 'H around whichsis coiled a spring- 112 ofwhich ene endi's secured to th'e sleevewhilst its other end is attached t6 a lever 73. The lever 13 is loosely mounted atone ene'eh the; spindle 4|, vkihi1st 7 its other ,end bears against theheart cam 2 5: by

meansof a roller 15 (Fig. 5?.

liquid 911- -15 provided with rounded ends for engaging with the V levers 49, 52;

7 return spring 14 is eehheetea atione eha to the structure I and l5". 7 I The operation of the machine above described is a s follows:

at the other end to th lever V The various parts are in the position as shown the drawing and itis to be assumed that a r hhet hasfbeen fitted inthe and a; wire to be coatedand Wound on the former has been; passed through thephole 60,, around the p roller-6i, along the groove 63 in the spout ,and theend; attached to the chuck. l The lever- I5 is depressed thus turning 1311875 with-the conicalsurface 8. l

the lever '10 is engaged with the lever '66 which as a result of the action of the spring 61, moves. thelever 40 in' a, clockwise direction (Fig.2) un- ,As a result of the turning of the the tooth 26 is. brought into engagement with one of the radial recesSS'i l the worm wheerzl thus cou plingfthe" sp dl 24 to the worm whe i a 2|. The raising or the-spi e ess also bring cam carrier 28 into suchjajp'o'sition that the 35 is opposite the carngroove 32' of onefof the Cams e Y V y As the shaft 2,3 is now'b eing drivenfby the pulley In the chuck 65' with the former is ro' tate'd and thewire, havingbeen securedso'that it is lying in the corner" formed by the-cheek' off the chuck and the former, now takes up a p'osi-' tion closely adjacent to the cheek until one revolution has occurred when" the wire will follow the guide formed of Wire.

The spout $2 is so positioned relatively to the former that the ire f eed point to the former lags behind the tur'ns of wire as they are Wound 'onthe former. v is g I Durin the'winding operation the pin 35" fol lows the cam groov'e32, whichis atrue'spiral, as a result of whichthe, lever 3 1 turns ahout'th'e axis of its spindle in-an anticl'o'ckwisedirece t an. As the lever 49 is keyed to the spindle 42 it causes the lever 52 to follow 'its movement through the spring 5 l"thu's turnirigthej spouts:

about the axis oft'he Sp'ihdIeBT which the con- 7 v tamer 53 is mounted. s

H The ratio of the levers 37, 4'9 en'qtzehd spent 62 are suchthat when the pin 35, has moved from one of the cam grooves 32 to the other, the spout 62 has traversed the length "of the former ohwhich the wire is to be coiled: The spoutf li2 thus i'noves' substantially in synchronisln with the winding of the wire 'on' the former.

Whilst this movement r theispoutj a is, the; ing place, the end 45.of the leverf44 is f orcing" the spring-actuated plunger 41, which is now i 37 from a clockwise to an anti-clockwise 'direc tion. When the pin 35 reach hee'end of the cam groove 32, it is sprung'hythe action cfthe spring plunger 41 in contact lever Mfi'n an a anti-clockwise direction untilbrought up against or the contour of the cam whichfouews, thus rapidly reversing the angleofthe spout to thelc'or rect position for the winding'oi the secondlayer in the reversedirection; this" movement being ynchronised with the-approa h er the Jest, turn lshihg ehder the first layer.

o fthe'first layer against 'tli pheektat'the Immediately the laststurn is wound the Wall or turning the shaft V V v shaft l-4fthe 7 t cam 21 raises the spindle 24 as'a result of which by the wan er the preceding; urh

the same cycle'of movementsxare brought --1mo;

operation withreversal'at theendpf each layer until the four layersare completed.v j I Y At the end of the cam groove 33 is provided a pin-18 which is reachedby the pin 35 when the finalilayer of wire on the former has been'com-" plete'd; When the pin 35-reaches the pin 'l fi, this pin, as it turns with-the ca'mjcarrier -26,' nioves with-it the pin 35 and thus theslide 36to which the latter is secured.

The pin39 n the slide 36 thus moves the stop lever 50 in an anti-clockwisedirection as'a result of whichthe 'lever68 is rocked into the path of the'projection 69 through the medium of the lever-66 and the spring 61. a result the sh'aft M is rocked in a clockwisedirection thus disengaging the spring I3 from theend ofthe bush 9 and relieving the pressure between the friction lining H and theclutclrmember Hi, raising the lever 15 and, as a result ofa rotation of the-cam 21, allowing the spindle 24 with the cam carrier 28 to drop. During this movement the end 45 has snapped over the spring plunger 41 and the lever 13, through its roller 15 acting on the heart cam"25 has brought the cam carrier 28 into its starting position.

All the parts are now in their starting position. The wound former is now removed and a fresh former is placed in position for winding.

' The operations above described are now repeated for winding wire on the fresh former.

The spring 6 between the two collars 4, 'serves t take up the shock of the engagement ofthe lever 68 with the projection 69 and to absorb the energy that is still stored in: the shaft 2,3 thus preventing damage to wound coil.

Whilst the machine has been described above for winding four-layer coils it will be understood that it may be used for winding any number of layers includin a single layer coil, according to the number of cam'slemployed- The actual following movement of the feed point may be intermittent instead of regular and in cases where a small number of turns per layeriare being wound, it may not be necessary to make use of a following movement, relying upon the sudden movement of the feed point from side to side at the end of each layer to produce the conditions for the winding of the coil-in the manner described.

It will be understood from the foregoing that the wire is always fed to the former from a point which lags in relation to the point of contact of the wire with the former, so-that the angle of feed is maintained substantially constant as the winding of the layer proceeds by causing the spout 62 to turn about the axis of the spindle 51. In this manner the separate turns of wire are wound closely side by side. This result isensured as the separate layers are formed by imparting an accelerated movement to the spout 62 in its direction of movement as the end of one layer is reached and before thewinding of the next layer commences which is started with the same angle of lag as the previous layer but in the opposite direction. I V In order to allow for minute variations or discrepancies in the diameter of the wire which would vary the number of turns "for ai -predetermined-length of coil the space betweentheejams' can be Varied so that the accelerated movement is" arranged to coincide with the final turn of each layer. s

In ,'order to limit the amount adhering to the wire as it leaves the groove 63 in the spout,'t he groove -63 is opened out at'the end nearest to the cement container to allow a piece of felt or other absorbent material tog b'e fitted flush with the conical surface of the spout 62fso that the wire will pass between the spout cap and the felt thereby limiting the amount *of cement adhering to the wire on its passa ethrough the groove 63. I claim: v

1. In a coil winding machine the combination of a rotatably mounted former on which wire is adapted to be coiled, means for rotating said former, a guide for guiding wire onto said former,'said guide being mounted for oscillation about an axis transverse to the axis of the former, so that the guide, during oscillation, will move in a direction generally longitudinally of the former, and means for oscillating saidguide relative to the former until the required number oifturns has been wound onto the former, the initial "pen tion of the guide to the former and the rates: oscillation thereof relative to the rotative'speed of the former beingsuch that the guide main tains a substantiallyconstant angle of lag relative to turns of wire wound onto the'former until the required number of turns has been wound thereon. I '1 V. 2. In a coil winding machine the combination of a rotatably mounted former on which'wi're' is adapted to'be coiled, means for rotatingesaid former, a guide'for guiding wire ontosaid'former, said guide being mounted for oscillation about winding of 1 the an axis transverse to the axis of the former, so

that the guide, during oscillation, will .move in a directiongenerally longitudinally of the former, and means for oscillating said guide. relative to the former until the required number of turns has been wound onto the former, the initial position of the guide to the former'and the rate, of oscillation thereof relative to the ,rotative speed of the former being such that the guidemaintains a substantially constant angle of lag relative to turns of wire wound onto the formeruntil the required number of turns has been Wound there; on, the means for oscillating the, guide being constructed and arranged to move it through a distance in excess of the distance between the start and finish of wire turns on the former, and

means operative when the wire guide reaches the end of its oscillatory movement in one direction for oscillating it in the opposite direction to wind another layer of turns of wire onto those already on the former and causing the guide to assume the same angle of lag which it maintained while the previous layer of turns was being wound, but in the opposite direction. i

3. In a coil winding machine accordingto claim 2, wherein means are provided for oscillating said guide at a substantially uniform rate during the application of the separate turns of wire tothe former, and wherein means are provided for imparting an accelerated movement to said guide at the end of each layer of turns of wire 50 as that said guide starts its return movement with the same angle of lagfor the second layer of. wire turns but in the opposite direction to thelag for the first layer of wireturns. V.

mounted for oscillatoryi'movement, :inean's :con-

of adhes ive still I seen? neringsadsp nd w the w re ide wh b to the lever and spindle and the wire guide oscilat d ,5, In amachine according to claim 2, a spindle mounted for oscillatory movement, means ,connecting said spindle with the wire guide, whereby oscillation of the spindle causes oscillation of the guide, a lever connected to said spindle for oscillation therewith, cam means, and means con-i nesting said lever with the cam meanswhereby relative movement by the cam means and the lever causes oscillatory movement to be imparted to the lever and spindle and the wire guide oscillated, a second lever mounted on said spindle for oscillation therewith and means for applying a springbias to said second lever to cause a re-,

sistance to movement to be imparted to said first lever and said spindle. 6. In a machine according to claim 2, a spindle mounted for oscillatory movement, means connecting said spindle with the wire guide, where by oscillation of the spindle causes oscillation of the guide, a lever connected to said spindle for oscillation therewith, cam means, and means connecting said lever with the cam means whereby relative movement by the cammeans and the lever causes oscillatory movement to be imparted to the lever and spindle and the wire guide os-' cillated; a container for coating material, and means'for applying material from said container to wire passing tosaid wire guide, whereby the wire wound-on said former will have a coating of said material thereon, 1

7. Ina machine accordingto claim 2, a spindle mounted for oscillatory movement, a lever keyed to said'spindle, a tension spring between said lever and a part of the operating means for the wire guide, a pivotally mounted arm, a plate carried. by said arm and interposed between said leverand said part of the operating means for the wire guidaa second lever keyed to said spindle, a pin carried by said second lever, and cam means with which said pin cooperates to control the oscillation of the wire guide.

' 8. In a machine according to claim 1, wherein said guide comprises a conical spout, said spout being provided in its periphery with a longitudinal groove extending along the entire length of said spout, and a conical cap rotatably fitted on said spout, said cap beingof corresponding shape to said spout, said cap having a longitudinal slit therein, the arrangement being such that for inserting the wire into the said groove the said slit is brought into register with said groove, whereupon the slit is moved out of register with the groove so that the cap prevents the wire'leaving the groove.

9. In a machine according to claim 2, a rotatable spindle, a lever mounted on said spindle for movement therewith, means so connecting said lever to said guide'that movement of the lever imparts movement to the guide, a second lever keyed to said spindle, a pin secured to said sec- 0nd lever, a cam device withwhich said pin'cooperates, a stop pin carried by said cam device, said stop pin being located in a position cor-re? spending with the last turn of wire to be WQ md-V -on the former, said stop pin beingadapted to co- Operate with the pin carried by Said second lever,

and return mechanism f.or resett'i g said guide and said cam device in their startingfpojsitio 5,

said return mechanism co=operating with sa d 7 pin. V i

movement' therewith, means so connecting said lever to said guide that movementlof the lever imparts movement. to the guide, a second lever a keyed to said spindlala pin secured to said second lever, a cam device with which said pin,

co-operates, a stop. pin carried bysai cam device, said stop pin, being located in a position corresponding with the last turn of wire to be wound ,on said f rmer; said stop pin being adapted to co-operate withthe pin carried by said second lever, a second pin secured to said second lever, arocking lever co-operating with said second pin, and mechanism for returning the mounting means for the former to its starting position, said return mechanism being asso-j ciated with said rocking lever. l a

11, In a machine according to claim 2, includ-. ing a driving shaft, a driving pulley r'nountedfreely on said shaft, a friction clutch including: two clutch elements, one of said clutch elements being secured to said driving pulley and the second of said clutch elements being keyed to said driving shaft, a pair of, collars on said driving shaft, one ofsaid collars being keyed to said driving shaft, whilst the second of said collars is loose on said driving shaft, a coiled spring lapped around said collars, one end of said coiled spring being secured to one of said collars and the other end of said coiled spring being secured; to the second of said collars, a projection on said loose collar, a rocking lever adapted to COPOPBIF,

ate with said project n, means for holding sa rocking lever out of the path of said projection during, the wire winding operation, and means i for moving said rocking lever into the path of said projection when the wirewinding operation lever keyedto said spindle, a pin secured to said 0 second lever, a cam device with which said pin keyed to said shaft, and means for actuating said rocking lever, the arrangement being such that during the wire winding operation the rocking lever is in a position in whichthe cam holds the cam carrier in a raised operative position, whilst when the wire winding operation has been completed the rocking lever is moved into a position so that the cam allows the cam carrier, to .dIOD into the inoperative position under the a t o fsra it V 13, In a machine according to claim 2, the combination comprising a driving shaft, a chuck mounted on said driving shaft,jthe former being mounted on said chuck, a secondary shaft, a ,gearingbetween said driving shaft and said secondary shaft whereby said secondary shaft is driven in theopposite direction to said drivin shait, a worm on said secondary shaft, a cam I a machine according to 2, a riotatI-E able spindle, a lever mounted on said spindlefor spindle connected to said cam device, a worm wheel loosely mounted on said spindle, said worm wheel having radial recesses in one face thereof, and a tooth secured resiliently to said spindle, said tooth co-operating with said recesses.

14. In a machine according to claim 2, including a driving shaft, a, drivingpulley mounted freely on said shaft, a friction clutch including two clutch elements, one of said clutch elements being secured to said driving pulley and the second of said clutch elements being keyed to said driving shaft, a pair of collars on said driving shaft, one of said collars being keyed to said driving shaft, whilst the second of said collars is loose on said driving shaft, a coiled spring lapped around said collars, one end of said coiled spring being secured to one of said collars and the other end of said coiled spring being secured to the second of said collars, a projection on said loose collar, a rocking shaft, an operating lever on said shaft, a spring on said shaft, said spring being adapted to hold said clutch in its engaging position, a rocking lever keyed to said shaft, said operating lever when moved into an operative position serving to move said rocking lever out of the path of said projection and to move said spring into clutch engaging position, means for holding said rocking lever out of the path of said projection and means for releasing said rocking lever.

15. In a machine according to claim 2, including a driving shaft, 3, driving pulley mounted freely on said shaft, a friction clutch including two clutch elements, one of said clutch elements being secured to said driving pulley and the second of said clutch elements being keyed to said driving shaft, a pair of collars on said driving shaft, one of said collars being keyed to said driving shaft, whilst the second of said collars is loose on said driving shaft, a coiled spring lapped around said collars, one end of said coiled spring being secured to one of said collars and the other end of said coiled spring being secured to the second of said collars, a projection on said loose collar, a rocking shaft, an operating lever on said shaft, a spring on said shaft, said spring being adapted to hold said clutch in its engaging position, a rocking lever keyed to said shaft, said operating lever when moved into an operative position serving to move said rocking I lever out of the path of said projection and to move said spring into clutch engaging position, means for holding said rocking lever out of the path of said projection, and means for releasing said rocking lever, said means for holding and r releasing said rocking lever including a. second lever keyed to said rocking shaft, a rotatable spindle, a spring operatively associated with said rotatable spindle, said spring normally tending to urge said rotatable spindle into its normal position, a third lever keyed to said rotatable spindle, said third lever being adapted to engage said second lever during operation of the machine so as to hold 'said rocking lever out of the path of said projection, a spring connected at its opposite ends to said rocking lever and to said third lever, a stop lever on said spindle, and means co-operating with said stop lever, the ar- 10 rangement being such that when the stop lever is actuated at the end of a coil winding operation the third lever is disengaged from the second lever and the spring pulls the rocking lever into the path of said projection.

16. In a machine according to claim 2, the combination comprising a driw'ng shaft, a chuck mounted on said driving shaft, the former being mounted on said chuck, a secondary shaft, gearing between said driving shaft and said secondary shaft whereby said secondary shaft is driven in the opposite direction to said driving shaft, a worm on said secondary shaft, a cam device operatively connected to said guide, a spindle connected to said cam device, a worm wheel loosely mounted on said spindle, said worm wheel having radial recesses in one face thereof, a resilient heart-shaped cam secured to said spindle, adjacent said worm wheel, a tooth secured to said heart-shaped cam adjacent the point thereof and on the face thereof adjacent the recesses in said worm wheel, said tooth being adapted to co-operate with said recesses, and a spring actuated lever co-operating with said heart-shaped cam, said spring actuated lever being adapted to return the heart-shaped cam, and thus the cam device, into its starting position after the coil winding operation has been completed.

17. In a machine according to claim 2, a rotatable spindle, a lever mounted on said spindle for movement. therewith, means so connecting said lever to said guide that movement of the lever imparts movement to the guide, a second lever keyed to said spindle, a pin secured to said second lever, and a cam device with which said pin co-operates, said cam device including a plurality of cams which are relativel adjustable to allow for minute variations and discrepancies in wire diameter and for varying the number of turns of wire in each successive layer.

18. In a machine according to claim 2, a rotatable spindle by which said lever is carried, a rotatable spindle, a lever mounted on said spindle for movement therewith, means so connecting said lever to said guide that movement of the lever imparts movement to the guide, a second lever keyed to said spindle, a slide slidably mounted on said second lever, a pin on said slide, a cam device with which said pin co-operates, a stop pin in said cam device, said stop pin being adapted to cc-operate with said pin at the end of the c0i1 winding operation, a second pin secured to said slide, and a stop lever co-operating with said second pin.

19. In a machine according to claim 21, a spindle mounted for oscillatory movement, means connecting said spindle with the wire guide, whereby oscillation of the spindle causes oscillation of the guide, a lever connected to said spindle for oscillation therewith, a rotatable member having a cam groove therein, a, pin carried by said lever and extending into said cam roove, whereby rotation of said rotatable member causes an oscillatory movement to be imparted to the lever and spindle and the Wire gride oscillated.

JOHN WILLIAM MILLER. 

